Just like there are different tools for different jobs, there are different ways of speech for different conversations. For one person, you might need to use a rhetorical chainsaw to chop them down a peg, but often for others a rhetorical bandage is required to heal their gaping wounds. And it takes wisdom to know which tool to use.
But notice that regardless of the tool, St Paul says our speech is always to be gracious. Even the strongest rebuke should come from a heart that loves the person we are interacting with.
Because the evangelical church today is currently stuck in the “nice" ditch, our temptation here as we seek to be faithful will be to overcorrect and become harsh, uncaring, unloving, and lacking grace toward unbelievers.